docs: Fix cli usage examples (backport #21150) (#21154)

Co-authored-by: Christoph Otter <chipshort@tutanota.com>
Co-authored-by: Julien Robert <julien@rbrt.fr>

server/cmt_cmds.go

@@ -182,7 +182,7 @@ Please refer to each module's documentation for the full set of events to query
 for. Each module documents its respective events under 'xx_events.md'.
 `,
 		Example: fmt.Sprintf(
-			"$ %s query blocks --query \"message.sender='cosmos1...' AND block.height > 7\" --page 1 --limit 30 --order-by ASC",
+			"$ %s query blocks --query \"message.sender='cosmos1...' AND block.height > 7\" --page 1 --limit 30 --order_by asc",
 			version.AppName,
 		),
 		RunE: func(cmd *cobra.Command, args []string) error {